Engine Department Competence

Fuel Oil Treatment & Management

Test your knowledge of fuel oil treatment systems, fuel purification, CAT Fines removal, Hybrid Fuels, fuel compatibility, and onboard fuel management according to engine makers' recommendations. Designed for marine engineers of all ranks.

Questions 15

Time Limit 9 min

Language English

Sample Questions

Here are some example questions from this quiz. Download the GYRO app to take the full test.

Question 1

The recommended term of storage period for hybrid fuels? No more than:

A 3 months.

B 6 months.

C 10 months.

D 12 months.

Question 2

Unstable fuel on board is result of:

A Long storage.

B Overheating.

C Mixing two different sources.

D Excessive lubrication oil contamination.

E High ambient humidity in engine room.

Question 3

Definition of fuel oil treatment line:

A Settling.

B Pumping.

C Heating and separation.

D Filtration and chemical dosing.

E Cooling and recirculation.

Question 4

What is reccommended sulphur content of hybrid fuel HDMA 50 and RMD-80?

A 0.1%.

B 0.5%.

C 1.1%.

D 1.5%.

Question 5

What could cause unstable fuel conditions in storage tanks?

A Thermal stress.

B Long term of storage.

C Excessive temperature.

D Vibration from nearby machinery affecting tanks.

E Frequent switching between fuel transfer pumps.

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